Philippine bar exam questions 2008(Q14-LABOR)

"Puwersa", a labor federation, after having won in a certification election held in the company premises, sent a letter to respondent company reminding it of its obligation to recognize the local union the federation represents and enter into a CBA with the local union. Respondent company replied that though it is willing, the rank-and-file employees had already lost interest in joining the local union as they had dissolved it. "Puwersa" argued that since it won in a certification election, it can validly perform its function as a bargaining agent and represent the rank-and-file employees despite the union's dissolution. Is the argument of "Puwersa" tenable? Decide with reasons. (6%)